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For Firefox users, there is media bias / propaganda / fact check plugin.
https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/
- Consider including the article’s mediabiasfactcheck.com/ link
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Nope, metals are elements as opposed to molecule compounds and literally can be melted and cast forever. They say most of the gold ever mined is still in use today, so your modern ring might have bits of a ring melted down in ancient Egypt in it. Glass is like this too. Paper is more like plastic, albeit somewhat biodegradable when it eventually has to be thrown out.
In practice, there's still a limit for many metals because they will get contaminated. Copper building up in scrap steel is a problem IIRC. It's not a big issue with aluminum, though, unless you're doing something like building an airplane where you need super high purity. Cans are almost all recycled into more cans.
There are ways to purify a metal melt, but they can be expensive and usually produce waste slag. I've never heard of glass being purified; it's probably too cheap to not just make more of, since it's derived from really common minerals.
My cast iron pan was made from recycled iron. And if I bought it a month later it would be in the batch that has a product recall because they also recycled some lead in it
Yep, that'll do it. If you have a pile of scrapped iron things, you have to think it wouldn't be hard to miss something that has a lead battery or weight in it somewhere. Although, I have to wonder why they didn't test that batch before it was sold, if it's for cooking in.
I seem to remember a story about a radiation source for probing gas wells getting into scrap and causing problems. They just look something like a metal cylinder, so would blend in easily with all the other oil and gas errata getting scrapped.
thank you for the explanation, it was really interesting and in-depth! you should be a teacher!
Thanks! I'm not sure I have the same presence IRL, haha.
ah don't worry about that, lots of it is online now :3